Burglar net



.im 2s, 192s.

V. E. DAVIDSON BURGLAR NET Find sept. v, 192e- 2 SheetsfSheet INVENToR.

ATTOREY.

Verna Ef, Davidsonlll/A June 26, 1928.

v. "E. DAvlDsoN BURGLAR NET Filed Sep,.-7, 1926 V2 Sheets-Sheet 2 INVENTOR. Verna E'. avidsoN. y

' BY l V 4J.

ATTORNEY.

. the occupants of the building or room, when locked in certain positions, Afrom access b Patented .lune 26, 1928.

^ UNITED STA i venin E. DAVIDSON, oF DETRoInMIoHIeAN.

BunGLAR NET.

' `rippiieatiim filed september 7,1926. serial No. 133,920.

My invention relatesv toi anew and useful ,improvement yin :a burglartrap adapted for mounting in buildings suchas banks,oflicesv and the like, for the purpose of entrappiiigl burglars ,and for the purpose of protecting i the undesired persons.

Another object of the invention is thepro- .vision in a device of this kind of a sectionall telescoping closure for a door adapte-d for moving into p os'itionto cover the door opening when set into operation. J Another object of the invention isv the provision in a device of this class of a-sectional closure adapted for movingV into position over a door opening and moving the door to'closed positionwhen set into operation.

Another object ofthe invention is the provision of aV window grating adaptedffor moving overl the window opening to close the saineV when'set into operation.` l Another object of the invention is the provision ofan electrically operated catch for retaining the closures mentioned in inoperative condition under normal conditions.

Another obj ectofthe invention is the pro# vision of a drum upon which thel operating cord may be Wound andunwound upon the operation of thedevice. A j

Other objects will appear hereinafter.

The invention consists in the combination Aand arrangement of parts hereinafter described and claimed. The invention will be best understood by a` reference tof` the accompanying drawings which form apart' of this 'specification and inwhich, v y' y' f Y' s Fig.'1 isa fragmentary sectionalview of a 'rooinshowing the invention applied with parts inside elevation,"par=ts broken away and partsV shown in section. j V'Fig. 2 is, a" front velevational view of the door opening closure.; .v j y Figi 3 is a fragmentary sectional view taken .on substantially line 3-3 of Fig. 2.

Fig. '4 is a- 'fragmentary side elevational view 'taken'l on substantially line Ll-Ll .of Fig. 2. f j Fig. 5 is a operating motor. Y. Fig. 6V is a sideelevationaljview of the invention taken on .substantially line 6 6 of Fig. 5. A s' Fig. 7 is a side elevational-view of a windowopening showing the invention applied top plan viewfof the drum and A fthereto with parts broken away `'and parts shown in section. i

Fig. 8 .is a sectional view taken on substantially line 8--8 of Fig. 7.

Fig. 9 is a sectional View taken on substantially line 9 9 of Fig. 7.

Fig. 10 is a `fragmentary sectional view .taken on substantially line 10-10 of Fig. 7.

A Fig. 11v is a fragmentary sectional view showing the latch mechanism used at one side of the-invention.

Fig. 1-2 isa fragmentary sectionalcview showing the latching mechanism in side elevation used at the other side of the invention. i i i As shown in Fig; 1 the invention is adapted`for mounting in a building or similar room having a. floor 17 and a ceiling -18,

the floor being supportedby suitable supports 19'and 20 to provide a basement below the floor. A

The invention is illustrated as applied to.

'a bank in which a transparent partition 21 will serve to enclose the teller or other clerk, having a mouth piece 22inounted therein and provided With a suitable opening 23 having the closure 24, this partition and its parts being bulletproof. Extending along the one side of the building, beneath theV ceiling 18, is a conduit 25, through which projects a cord 26-` which is wound on the drum 27. This drum is driven by a motor 28,`upon the shaft of which is mounted the gear 29 which meshes'with the gear 30"car ried by the bell crank 31,tlie gear 30 meshing` with a similar lgear 32 also carried by theabell crank 31. Mounted upon the'shaft 33 of the drum 27 is aj gear 34 with which the gear k32 may be brought into mesh at will by rocking the bell crank 31 on its pivot 35 by means of the arm'36. Fixedly mounted upon the drum shaft 33 is a ratchet wheel 37 engaging with which is a rockingly mounted dog 38 normally held by the spring 39 in engagement with the teeth of the ratchet wheel 37. This dog 38 is electrically operated by means Vof the coil 40 which is ,connected by thewires 41`to someA suitable source of electrical energy. Upon an energizing ofthe coil 40, the clog 38 is rocked 'by the compressed Vspring 39 so as todisengage the ratchet wheel 37. VThe member 26 communicates with a'trackage 38 which projects over 4the door opening 39 formed in the wall of the building. A door 40 is swingably mounted to serve as a closure for the upper endy of each of these panels carries a roller 49 riding on the bottom portion 45 of the track. A ,roller 50 is mounted on the lower end of the panels 48 and rides in a track l mounted in the floor 17. A pulley 52is mounted at the end of the horizontal trackage 38, a tube 53 projecting vertically downwardly through. the floor and Y communicatingwith the housing 54 in which 1s posltioned aweight 55.

The cord 26 is attached to an eyelet 56 mounted in the weight and a similar eyelet 57 at the other end of the weight is attached to the cord 59, this cord extending around the pulley 60 and wound on the drum 27. 'I he cord 26 issecured to theend panel 48 which yhas the diagonal cut end 48 as shown in Fig. l.

rlhe construction 1s such that upon a releaseot the dog 38 the weight 55 will serve Y to slide the panels 48 across the door opening 39, the panel 48 engaging the abutment members 4l and 42 and serving to `move the door 40 to closed position and eX.-

tend across the openingv 39 to, form an eifective barrier against either entrance or exit. A diagonally extending beam 6l isprovided with a slot 62 in which the edge of the panel 48 may engage so as to prevent tampering with a knife or other4 similar instrument to eti'ect an opening of they sectional closure.

. A housing 63 is mounted behind the partition 21 and provided with the button switch 64 for the purposeof closing the cirf cuit to the coil 40, j The structure andar- 65 is mounted rangement is such that the operator when desired may close the switchV 64 and thus etlect a movementy of the sectional closure across the door o Jening 69,. A ratchet wheel xedly on the standard 66 and engage with a dog 67 mounted on the drum 27, Vso that backward rotation of the drum will be prevented.

. I have also provided a closure for a window opening 68 in which may be positioned a window 69. Extending around the window opening 68 is a metallic frame 7 0 having its end 7l angular-ly turned as is likewise its end 72 to form sidel walls, the side walls 72 being again angularly turned as at 73 to forml a track in which engages a roller 74. A similar structure is mountedv at the opposite side of the window openingand a similar roller 74 engages in the track. A

. below the floor 17.

`formed and extending through this tubular member is a cord 77, one end of which is attached tothe uppermost panel 78, this panel telescoping with the panel 79 which telescopes with the panel 80 etc. t The lowermost panel is secured to the frame work provided. i

' Secured to the lower end of the cord 77 is a weight 8l riding in a guide 82 positioned Mounted on the panel 78 is a projection 83 engageable with a latch 84 operated by the coil 85, this coilbeing connected by the wires v86 to a suitable source'otl electrical energy and through the .switch 64. Upon a closing of the switch 64 the latch 84 will be withdrawn from operative position permitting the weights 8l to move the sections 78, 79 and 80 upwardly intofposition over the window opening, so as to etl'ectively afford the protection desired.

, A projection 87 is mounted on the panel 7.8 and serves to engagebehind an electric latch 88 which is operated by the coil 89, this coil being suitably connected by the wires 90 to asourceof electrical `energy and through a switch. Y

The structure is such that when the weights 7l raise these sections upwardly the latch Ywill serve to lock the sectionsin operative position.

It is believed evident that the device cons tructed and arranged as I have set out is one which will a'li'ord effective protection for the purposes intended and onewhich is easily and quickly operated while at the samel time simple in structure.

In order to rewind the cord so as to move the closures to inoperative position the latch 8 8 will be moved to inoperative position and the dog 67 moved to inoperative position upon which an o )eration ofthe motor 28 will eifect through tie gearing described a rewinding ot the cords on the drum 27,

While I have illustrated and described the preferred form of my invention, I do not wish to limit myself to the precise from of structure shown, but desire to avail myself of such variations and modifications as may come within the scope of the appended claims.

Having thus described my invention what I claim as new and wish to secure by Letters Patent is:

l. A burglar trap of the class'described adapted for use with a. building having a door opening formed therein, comprising: a swingably mounted door for said opening; a

sectional collapsible closure for said opening; a. track extending across said opening above the upper edge thereof; a track extending across said opening below lll!) the lower edge thereof; a roller mounted on the upper end of each of the sections of said closure engaging in the upper of said tracks; a roller on the lower end of each of said sections engaging in the lower track; means for moving said closure across said opening at will; means for preventing the reverse movement of said closure romacrossl said door opening; and means on said door en-` gageable with said closure for effecting a closing of said door upon movement of said closure across said opening and for limiting the opening movement oi' said door upon movement of said closure across said opening.

2. A burglar trap of the class described adapted for use with aI building having a door opening formed therein, comprising: a swingably mounted door for said opening; a

plurality of sections arranged in telescopicV relation for forming a closure for said door opening; means operable for moving said sections to operativer and inoperative position; and a pair of projections, one positioned adjacentthe top and the other posi tioned adjacent the bottom, and projecting outwardly from one face of said door,saidl projections being engageable by said sections upon movement of the same to operative position, and serving to swing said door to closed position, said projections engagingthe face of said sections after movement of the vsame to operative position and. preventing swinging oi said swingable door. c

3. A burglar trap oi the class described adapted for use with a building-having a" door opening` formed therein, comprising: a

swingably mounted door for said opening; a plurality of sections arranged in telescopic relation for forming a closure for said door opening; means operable for Vmoving said sections to operative and inoperative position; a pair of projections,pone positioned adjacent the top and the other positioned adjacent the bottom and projecting outwardly from one face of said door, said projections being engageable by said sections upon movement of the same to operative position, and serving to swing said door to closed p0- sition, said projections engaging the face of said sections after movement of the same to operative position and preventing swinging of said swingable door; and groove bearing meansfor reception of the edge of the endmost of said sections upon movement of said sections to operative position for preventing lateral movement of the same.

t. A burglar trapY of the class described adapted i'or use with a. building having a door opening formed therein, comprising: a swingablymounted door for said opening; a

`sectional slidable closure for said opening,

said closure beingadapted for movement to Voperative or closing position upon swinging ot' said swingably mounted door to closing position; and means engageable with said closure upon incipient movement oi the same to operative position for eecting the swingingv of said swingably mounted door to closed position.

Y In testimony whereof I have signed the foregoing. Y

VERNA E. DAVIDSON. 

